Hollow C@MoS2 Nanospheres for Microwave Absorption

被引：38
|
作者：
Xu, Linling [1 ,2 ]
Tao, Jiaqi [1 ,2 ]
Zhang, Xianfei [1 ]
Yao, Zhengjun [1 ,2 ]
Wei, Bo [1 ,2 ]
Yang, Feng [1 ]
Zhou, Congyu [1 ]
Zavabeti, Ali [3 ]
Zuraiqi, Karma [4 ]
Zhou, Jintang [1 ,2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211100, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Key Lab Mat Preparat & Protect Harsh Environm, Minist Ind & Informat Technol, Nanjing 211100, Jiangsu, Peoples R China
[3] Univ Melbourne, Dept Chem Engn, Parkville, Vic 3010, Australia
[4] RMIT Univ, Sch Engn, Melbourne, Vic 3000, Australia
来源：
ACS APPLIED NANO MATERIALS | 2021年 / 4卷 / 10期
基金：
中国国家自然科学基金;
关键词：
interfacial polarization relaxation; impedance matching; hollow C@MoS2; core-shell; microwave absorption; DIELECTRIC-PROPERTIES; MOS2; NANOSHEETS; SHELL THICKNESS; CARBON SPHERES; MICROSPHERES; COMPOSITES; NANOCOMPOSITES; NANOPARTICLES; ENHANCEMENT; EXCELLENT;
D O I：
10.1021/acsanm.1c02715
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The engineering of core-shell nanostructures provides a great potential to induce interfacial polarization relaxation and optimize impedance matching. Herein, core-shell-structured MHCS@MoS2 nanospheres are developed using hollow carbon (MHCS) and stacked MoS2 nanosheets. Heterostructures between cores and shells significantly boost the interface polarization effect and effectively reduce the electromagnetic wave (EMW) reflection caused by highly conductive MHCS. Thereby, efficient and broadband electromagnetic microwave absorption (EMA) performance can be achieved. Through controlling the thickness of MoS2 shells and the graphitization of MHCS cores, the effective absorption bandwidth (f(E)) of MHCS@MoS2 can reach 6.21 GHz at the thickness of only 2.1 mm. The nanodesigned core-shell-shaped MHCS@MoS2 nanospheres are demonstrated as a promising high-performance EMA material.
引用
收藏
页码：11199 / 11209
页数：11
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